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參數(shù)資料
| 型號(hào)： | SN74LVT243 |
| 廠商： | Texas Instruments, Inc. |
| 英文描述： | 3.3V ABT Quadruple Bus Transceivers With 3-State Outputs(3.3V ABT 四總線接收傳送器(三態(tài)輸出)) |
| 中文描述： | ABT生根粉四重3.3總線收發(fā)器與三態(tài)輸出電壓（3.3V ABT生根粉四總線接收傳送器（三態(tài)輸出）） |
| 文件頁(yè)數(shù)： | 1/5頁(yè) |
| 文件大小： | 100K |
| 代理商： | SN74LVT243 |
SN54LVT243, SN74LVT243
3.3-V ABT QUADRUPLE BUS TRANSCEIVERS
WITH 3-STATE OUTPUTS
SCAS353 – MARCH 1994
Copyright
1994, Texas Instruments Incorporated
2–1
POST OFFICE BOX 655303
DALLAS, TEXAS 75265
State-of-the-Art Advanced BiCMOS
Technology (ABT) Design for 3.3-V
Operation and Low-Static Power
Dissipation
Supports Mixed-Mode Signal Operation
(5-V Input and Output Voltages With
3.3-V V
CC
)
Supports Unregulated Battery Operation
Down to 2.7 V
Typical V
OLP
(Output Ground Bounce)
< 0.8 V at V
CC
= 3.3 V, T
A
= 25
°
C
Latch-Up Performance Exceeds 500 mA
Per JEDEC Standard JESD-17
Bus-Hold Data Inputs Eliminate the Need
for External Pullup Resistors
Supports Live Insertion
Package Options Include Plastic
Small-Outline (D), Shrink Small-Outline
(DB), and Thin Shrink Small-Outline (PW)
Packages, Ceramic Chip Carriers (FK), and
Ceramic DIPs (J)
description
These quadruple bus transceivers are designed
specifically for low-voltage (3.3-V) V
CC
operation,
but with the capability to provide a TTL interface to
a 5-V system environment.
The
′
LVT243 is designed for asynchronous communications between data buses. The control-function
implementation allows for maximum flexibility in timing. The device allows data transmission from the A bus to
the B bus or from the B bus to the A bus depending upon the logic levels at the output-enable (OEBA and OEAB)
inputs. The output-enable inputs can be used to disable the device so that the buses are effectively isolated.
The dual-enable configuration gives the quadruple bus transceivers the capability to store data by simultaneous
enabling of OEBA and OEAB. Each output reinforces its input in this transceiver configuration. Thus, when both
control inputs are enabled and all other data sources to the two sets of bus lines are at high impedance, both
sets of bus lines (eight in all) remain at their states. The 4-bit codes appearing on the two sets of buses will be
identical for the
′
LVT243.
Active bus-hold circuitry is provided to hold unused or floating data inputs at a valid logic level.
To ensure the high-impedance state during power up or power down, OE should be tied to V
CC
through a pullup
resistor; the minimum value of the resistor is determined by the current-sinking capability of the driver. OE should
be tied to GND through a pulldown resistor; the minimum value of the resistor is determined by the
current-sourcing capability of the driver.
The SN74LVT243 is available in TI’s shrink small-outline package (DB), which provides the same I/O pin count
and functionality of standard small-outline packages in less than half the printed-circuit-board area.
The SN54LVT243 is characterized for operation over the full military temperature range of –55
°
C to 125
°
C. The
SN74LVT243 is characterized for operation from –40
°
C to 85
°
C.
SN54LVT243 . . . J PACKAGE
SN74LVT243 . . . D, DB, OR PW PACKAGE
(TOP VIEW)
SN54LVT243 . . . FK PACKAGE
(TOP VIEW)
3
2
1 20 19
9 10 11 12 13
4
5
6
7
8
18
17
16
15
14
NC
NC
B1
NC
B2
A1
NC
A2
NC
A3
N
O
N
B
B
V
O
A
G
N
C
NC – No internal connection
1
2
3
4
5
6
7
14
13
12
11
10
9
8
OEAB
NC
A1
A2
A3
A4
GND
V
CC
OEBA
NC
B1
B2
B3
B4
PRODUCT PREVIEW information concerns products in the formative or
design phase of development. Characteristic data and other
specifications are design goals. Texas Instruments reserves the right to
change or discontinue these products without notice.
P
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| SN54LVT2952 | 3.3V ABT Octal Bus Transceivers and Registers With 3-State Outputs(3.3V ABT 八總線收發(fā)器和寄存器(三態(tài)輸出)) |
| SN54LVT574J | Quad Analog Switch/Multiplexer/Demultiplexer; Package: SOIC 14 LEAD; No of Pins: 14; Container: Tape and Reel; Qty per Container: 2500 |
| SN54LVT574FK | Quad Analog Switch/Multiplexer/Demultiplexer; Package: SOIC 14 LEAD; No of Pins: 14; Container: Tape and Reel; Qty per Container: 2500 |
| SN54LVT574W | Quad Analog Switch/Multiplexer/Demultiplexer; Package: TSSOP-14; No of Pins: 14; Container: Tape and Reel; Qty per Container: 2500 |
| SN74LVT574DB | 3.3-V ABT OCTAL EDGE-TRIGGERED D-TYPE FLIP-FLOPS WITH 3-STATE OUTPUTS |
相關(guān)代理商/技術(shù)參數(shù) |
參數(shù)描述 |
|---|---|
| SN74LVT244ADWR | 制造商:Rochester Electronics LLC 功能描述:- Bulk 制造商:Texas Instruments 功能描述: |
| SN74LVT244AN | 制造商:Rochester Electronics LLC 功能描述:- Bulk 制造商:Texas Instruments 功能描述: |
| SN74LVT244ANSR | 制造商:Rochester Electronics LLC 功能描述:- Bulk 制造商:Texas Instruments 功能描述: |
| SN74LVT244APWR | 制造商:Rochester Electronics LLC 功能描述:- Bulk |
| SN74LVT244BDB | 制造商:Texas Instruments 功能描述:Buffer/Line Driver 8-CH Non-Inverting 3-ST BiCMOS 20-Pin SSOP Bulk |
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